I've had it twice, and I have long covid, which is not so nice, but not so bad as regular covid. At least long covid only lasts a day or two days per attack.
I don't know why some people get long covid and others don't. I can only attribute it to when my allergies started after 9/11. Because i never had allergies before that, and was never sick. Since then, i have had major allergies, and covid just made it worse.